ANTI-FLAME FILM AND METHOD FOR PRODUCING THE SAME

摘要

To produce an anti-flame film, nanoscale silicate platelets (NSP) are first diluted with water or an organic solvent; the dispersion is then dried on a surface to remove the water or organic solvent and finally an almost inorganic and flexible film with a thickness of 1 to 1,000 μm is obtained. The film has a regularly layered alignment of primary platelet (1 nm thickness) structure. The NSP film has excellent anti-flame and heat insulation properties that can effectively shield a flame of more than 800° C. without apparent deformation in shape. The NSP can be blended with polymers with a composition over 30% or preferably 70% of NSP to make composite films with significant improvement in flame and heat shielding.

主权项

1. An anti-flame film, comprising nanoscale silicate platelets (NSP) with over 95 wt % inorganic composition (or carbon less than 6%) and having a thickness of about 1 to 1,000 μm and flexibility with a minimum bend diameter of about 1 to 100 mm; wherein the NSP are fully exfoliated inorganic silicate clay in the form of independently dispersed platelet units and have an isoelectric point at about pH 6.4 in an aqueous solution; and the inorganic silicate clay is selected from the group consisting of montmorillonite, bentonite, laponite, synthetic mica, kaolinite, talc, attapulgite clay, vermiculite and layered double hydroxides (LDH).